Using the same frying pan, on medium heat, add 2 Tbsp. butter, and 1 Tbsp. Olive Oil, add 6 eggs, add salt and pepper, cook without stirring until the edges begin to set. Using a spatula, push the edges slightly toward the centre of the pan, and slightly tilt the pan, for uncooked eggs to move to the edge.
Take a large plate and place on top, quickly flip, and place back in pan to cook the other side.
Add Cheese on eggs to both sides, then add veggie medley spinach topping, on one side.
Once omelette is slightly browned on the bottom, flip half over the topping and ready to serve.